The question was: what will the time of Havadala [the departure of
the Sabbath] be in Madras, India on January 3, 5758?
Madras, India is at 13 degrees N latitude and 80 degrees 10
minutes 59 seconds E longitude and is 5.5 time zones east of Greenwich.
If my info so far is correct, sunrise on that date (Jan. 3, 5758) is at
5:14 AM and sunset is at 4:37 PM. Shabbos ends at 5:13 PM
which is the time when the sun is 8 degrees and 30 minutes below